Well...
The recreation of the accident was certainly well orchestrated, but the remainder seemed like the same sort of cookie-cutter anti-drug ad I've seen countless times. On a sidenote, I don't agree with your message as it was stated (that is, that marijuana use was solely responsible for the tragic deaths of these young men) and the whole spot seemed more like an irrational appeal rather than something that would actually make people seriously consider the potential consequences of their actions. The spot takes (or at least I presume, considering its backers) the opinion that all drugs are inherently bad and deadly, but I think that it's not so much the drugs themselves that lead to deaths, but the irresponsible and reckless attitudes of the people who use them. Eliminating all the drugs in the world, no matter how thoroughly, will solve this problem. A message such as this is better spent getting people to think rather than just presenting a propogandic message.